This avoids casting problems in case of empty_fixed_array as
FixedDoubleArray with size 0. This avoids prematurely shortcutting in
case of 0 all over the place, which in turn leads to errors.

Review URL: https://chromiumcodereview.appspot.com/11299226

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13098 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/11361281

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13097 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11414207
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13096 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Contributed by Peter Varga <pvarga@inf.u-szeged.hu>

BUG=
TEST=

Review URL: https://codereview.chromium.org/11434031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13095 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11411257

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13078 (73f25483)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/11316236
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13054 (636985d7)

BUG=
TEST=

Review URL: https://codereview.chromium.org/11415192
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r12980 (13380d3b)

BUG=
TEST=

Review URL: https://codereview.chromium.org/11308158
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r12711 (a8d45ac2)

Original commit message:
Allocate heap entry untagged and tag at end to avoid having to subtract off
the tag offset before storing the value.

BUG=
TEST=

Review URL: https://codereview.chromium.org/11280106
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r12676 (7d5e7e81)

BUG=
TEST=

Review URL: https://codereview.chromium.org/11308134
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13067 (c822cffa)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/11428068
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13061 (83bb6fcc)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/11316235
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13084 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r13056 (9b2c1725)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/11411253
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13083 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2433

Review URL: https://chromiumcodereview.appspot.com/11280223
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Making the code size predictable is hard, and to make things even more
complicated, the start of a function can contain various stuff like calls to a
profiling hook, receiver adjustment or dynamic frame alignment. Instead of
tackling all these problems separately, we now simply record the offset where
patching should happen later in the Code object itself.

Review URL: https://codereview.chromium.org/11316218

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Callbacks that run after garbage collection might fire a context dispose
notification and hence increse the counter before we actually reach this
position.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/11280214

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/11316219

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13079 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11411224

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13078 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Since r10174 they are not required to be in new space.

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11418181

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13077 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Main changes:
- include timestamps in profile ticks
- include code kind in code create events
- time execution in external code
- changed plot-timer-events.js to show the code kind being executed

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11428025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13074 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/11421123

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13073 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/11299154

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13072 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This avoids bogus calls to Fixed*Array::cast() when FastElements-backed objects are empty (and thus backed by empty_fixed_array).

Review URL: https://chromiumcodereview.appspot.com/11299190
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

These are likely causing some of the flaky crashes in Object.observe code. I've reorganized some of the code to minimize the number of necessary calls to map() (by saving the result of map()->is_observed() in a local bool).

Also move down an unnecessarily early call to Uint32ToString when sending an element deletion notification.

Review URL: https://chromiumcodereview.appspot.com/11316202

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13070 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Weak persistent handle callbacks might trigger nested GCs that in turn
can cause marking to be restarted. The assertion needs to hold before
firing callbacks only.

R=ulan@chromium.org
TEST=cctest/test-api --stress-compaction

Review URL: https://codereview.chromium.org/11413188

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Some unit tests specifically test scavenges and forcing them to do
global GCs instead makes no sense. The GC stress builder triggers this.

R=yangguo@chromium.org
TEST=cctest/test-api --stress-compaction

Review URL: https://codereview.chromium.org/11421098

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13068 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/11299200

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13067 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The heap snapshot generator uses the UnreachableObjectsFilter which in
turn messes with marking bits. This requires incremental marking to be
turned off while the snapshot is being generated.

R=verwaest@chromium.org
TEST=cctest/test-heap-profiler --stress-compaction

Review URL: https://codereview.chromium.org/11413183

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13066 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This makes sure that unit tests that try to fill up the new-space work
on the GC stress buildbots as well.

R=yangguo@chromium.org
TEST=cctest/test-heap --gc-interval=500 --stress-compaction

Review URL: https://codereview.chromium.org/11416200

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/11413179

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/11415070

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This commit fixes a small typo in r13032 (25d0edd7).

BUG=
TEST=

Review URL: https://codereview.chromium.org/11348205

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/11316168

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Remove eager sweeping for lazy swept spaces. Try to find in SlowAllocateRaw a bounded number of times a big enough memory slot.

BUG=v8:2194

Review URL: https://codereview.chromium.org/11420036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13058 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11316166

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=162085

Review URL: https://chromiumcodereview.appspot.com/11414155

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/11418153

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13055 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11418149

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13054 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
BUG=162606

Review URL: https://codereview.chromium.org/11348222

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13053 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This functionality is already implemented by PathTracer.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11412162

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13052 ce2b1a6d-e550-0410-aec6-3dcde31c8c00